Try this 1024x768 VESA xorg.conf, Mr-Biscuit, and see if it makes a difference. I don't have a G3, nor, any other Apple product. Not even an iPod. But this 8MB RAM Video, simple xorg.conf does work for a number of people. It's an option with my live media:

VESA vbe is not an option on non-x86 architectures jggimi, as described in FAQ 11.2.10 there are two ways of getting X on macppc.. the unaccelerated framebuffer (..wsfb(4)) or the accelerated X drivers like xf86-video-ati (..and maybe nv).

If you use the unaccelerated framebuffer you'll be stuck in 8bpp mode at a resolution controlled by the Mac firmware.. it cannot changed after the kernel takes over.

The benefit of Xorg auto-configuration is not available on OpenBSD/macppc as of yet, so unless you want to use the default unaccelerated framebuffer.. you'll have to customize /etc/X11/xorg.conf accordingly.

If your unable to determine your video card, just post a dmesg here in [code][/code] blocks and we'll be able to tell you how to proceed..

No, he shouldn't.. an xorg.conf from a Linux system will most likely NOT work on OpenBSD, not without significant changes.. keyboards and mice are handled differently for example.

You should use the default /etc/X11/xorg.conf and read the file I mentioned before, it explains how to set things up.

Configuration of accelerated X is fully explained, if the OP refuses to read it or post relevant information.. we cannot help him.

The OP had to travel to another city,the OP returned a day later, the OP had to order a router, the OP had to wait for a router, the OP had to be there when the router arrived, the OP had to have the DHCP address reset, the OP had to setup the router, the OP is working on one machine, the OP had to setup a laptop, the OP had to setup another laptop,
the OP got sick, the OP went through depression.

Don't be a jackass, you can ask why I was delayed.
I'll connect the G3 soon and run everything, including a reinstall of OpenBSD so that everything is a fresh install.

Currently, I'm having hardware problems with using openbsd fdisk and recognizing the correct drive size.

My cellphone neither has a usb interface, compatibility with linux, nor am I able to send pictures to emails because the account is limited.

When I have it up again, my card reader working, and a card for my camera that doesn't mess up;then, I will post all information maybe even a direct dmesg.
The openBSD 4.6 install is now working on the P4/Xeon tower.

I have it back on the g3, xorg is currently running at default.
I've saved dmesg to /home/user and I've edited according to advice given here.
Currently using xorg and compiling. I'm not posting from the g3.

I'm adding this edit. I had to set everything up by using Debian and Ubuntu to get the machine started, then an internet connection, then hardware changing, then a NetBSD install to fix the disk, and then finally OpenBSD as the permanent install.